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Highly Stable 6-18 GHz 2.3 dB Low-Noise Amplifier with Resistive-Loaded Series Feedback Circuits
Hidenori YUKAWA Yukinobu TARUI Koh KANAYA Hiromitsu UCHIDA Masatoshi NAKAYAMA Yasushi ITOH
Publication
IEICE TRANSACTIONS on Electronics
Vol.E86-C
No.12
pp.2445-2451 Publication Date: 2003/12/01 Online ISSN:
DOI: Print ISSN: 0916-8516 Type of Manuscript: Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology) Category: Amplifier Keyword: microwave, amplifier, wideband, low-noise, GaAs,
Full Text: PDF>>
Summary:
A novel design method for wideband low-noise multi-stage amplifiers is presented. It utilizes a RL-SFC ( esistive oaded eries eedback ircuit) comprised of a series feedback circuit with additional lossy match stubs to achieve low noise figure, low VSWRs, flat gain, and high stability simultaneously. In addition, each stage amplifier employs a different approach for designing the RL-SFC to achieve the best compromise between noise figure, VSWR, gain, and stability as a multi-stage amplifier. With the use of this novel design method, the 3-stage amplifier has demonstrated the state-of-the-art wideband low-noise performance of 2.3 dB over 6 to 18 GHz.
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